* {
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
}

html,
body {
    width: 1366px;
    height: auto;
    margin:0 auto;
}

ul,
li {
    list-style: none;
}

a {
    text-decoration: none;
}

h1 {
    text-align: center;
    display: block;
    font-size: 46px;
}

#center {
    width: 80%;
    height: 100%;
    margin: 0 auto;
}

#content {
    width: 95%;
    margin: 0 auto;
}


/* 清除浮动 */

.clear {
    clear: both;
}